Eight Ball Tattoo designs are a favorite for gamblers and those who love to play pool. This black ball bearing the number eight can be seen alone or with other gambling symbols. When playing pool one player must pocket all of either the solid-color balls or the striped ones before being permitted to attempt to pocket the eight ball. If either player sinks the eight ball before sinking all of their balls, they automatically lose. After sinking all of their solid or striped balls, a player must sink the eight ball in order to win the game. Eight ball tattoos are associated with both good and bad luck depending on the person who gets it.